Agin, K., E. Hoodeh, M. Nasseri, and M. Moinazad Tehrani. “Status of 25-OH Vitamin D Serum Level Among Wheezy Chronic Respiratory Diseases With Airway Obstructive Patterns; Office- Base Study”. International Journal of Medical Toxicology and Forensic Medicine, vol. 5, no. 2(Spring), Sept. 2014, pp. 57-63, doi:10.22037/ijmtfm.v5i2(Spring).5987.